2001 sierra 5.3.STS. 2 tunnel sound clips and dyno tune. Last pass 50% meth 50% water. to rich 2nd to last 100% meth. way to rich. Then meth kit quit working. 331 RWHP 389RWTQ @6PSI



Video

 

Lookin' good!
Meth kit quit?

 

I still haven't looked in to it to much. I have a green LED that comes on when the pump is spaying. Then I have a red LED if the pressure is under 40psi. On the 3rd pull they both come on then start flashing. And stay flashing till it turns off. I though it would be the pressure switch. That was the only thing I was messing with. Setting it so it would come on around 5 or 6 psi. So I bypassed the pressure switch and put 12v to the relay and it works. So I tested the pressure switch out side of the truck and it works. I put 12v to one side of the switch tripped the switch and it put out 12v to the other side. Go figure. Now I am going to test the switch hooked up in the truck. Just haven't had time. Plus the truck is in the garage for the winter.